“To all Americans and the rest of the world I’m honored to call President Trump a friend”, he said.

But in early 2018, North Korea began attempts to improve relations with South Korea by sending a team and delegates to the Winter Olympics in Pyeongchang.

The formal document signing followed a series of meetings at a luxury Singapore resort.

On Monday, Sung Kim, a former United States ambassador to South Korea and former nuclear negotiator with the North, will lead a U.S. delegation for a working group with a North Korean delegation at the Ritz Carlton hotel, Sanders said.

As Kim’s black Mercedes arrived at the St Regis hotel in downtown Singapore, it was flanked by bodyguards in identical black suits jogging alongside the auto.

Word does get around, however, and the prospect of a meeting between Kim and Trump had already been on the public’s radar. Responding to questions, he said “absolutely” he would invite Kim to the White House.

A “changed era” had come about, it said.

Hammering out a complete plan for North Korea’s denuclearization would be “an impossible chore” at this summit, Michael O’Hanlon of the Brookings Institutiontold NPR’s Windsor Johnston. [US] Amb [assador to the Philippines Sung] Kim meets with #DPRK [delegation] today.

Trump’s arrival comes just hours after Kim landed in the city.

USA and North Korean officials are set to meet Monday morning in Singapore to make final preparations for Tuesday’s meeting.

It’s unclear what Trump and Kim might decide Tuesday. So we look nice and handsome and thin?

Pope Francis has prayed that the summit this week between the US and North Korean leaders succeeds in laying the groundwork for peace.

Both leaders will meet Singapore’s Prime Minister Lee Hsien Loong before their summit. Kim has been accused of horrific rights abuses against his people.

A U.S. official, speaking on condition of anonymity, said Monday’s meeting appeared aimed at making 11th-hour progress ahead of the summit since Sung Kim’s earlier talks did little to narrow a gap between the two sides on the definition of denuclearisation or win agreement on tangible commitments from Pyongyang toward dismantling its nuclear arsenal. But he added “our hostages” are back home and testing, research and launches have stopped.

Part of the interest in Tuesday’s summit is simply because Kim has had limited appearances on the world stage.

Prime Minister Lee is set to meet Trump on Monday.

Kim had people around the world reaching for the dictionary when he called Trump a “mentally deranged USA dotard”, saying he would “tame” him with “fire”.

But the South’s Winter Olympics in February were the catalyst for a flurry of diplomatic moves as South Korea’s dovish leader Moon Jae-in sought to bring the two sides together, holding two summits of his own with Kim in the Demilitarized Zone that divides Korea.

What did North Korea say?

Previous agreements with the North have subsequently collapsed and experts warn Kim is highly unlikely to give up the “treasured sword” of his nuclear deterrent.